CVE-2024-40777
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 17.6 and iPadOS 17.6, macOS Sonoma 14.6, tvOS 17.6, visionOS 1.3, watchOS 10.6. Processing a maliciously crafted file may lead to unexpected app termination.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceAn out-of-bounds access vulnerability in Apple's ecosystem (iOS, iPadOS, macOS, tvOS, visionOS, watchOS) that allows a maliciously crafted file to trigger improper memory access, leading to unexpected app termination due to insufficient bounds checking.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 17.6< 17.6>= 14.0, < 14.6< 17.6< 1.3< 10.6CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check iOS version on iPhoneOpen Settings > General > About and look at the 'Version' fieldAffected if Version is less than 17.6 (for example, 17.5.x or earlier)
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Check iPadOS version on iPadOpen Settings > General > About and look at the 'Version' fieldAffected if Version is less than 17.6 (for example, 17.5.x or earlier)
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Check macOS version on MacOpen System Settings > General > About (or Apple menu > About This Mac) and look at the 'macOS' versionAffected if Version is 14.0 through 14.5.x (any version 14.0 or higher but below 14.6)
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Check tvOS version on Apple TVOpen Settings > General > About > VersionAffected if Version is less than 17.6 (for example, 17.5.x or earlier)
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Check visionOS version on Apple Vision ProOpen Settings > General > About and look at the version numberAffected if Version is less than 1.3 (for example, 1.2.x or earlier)
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Check watchOS version on Apple WatchOpen Settings > General > About on the watch, or open the Watch app on iPhone and go to My Watch > General > AboutAffected if Version is less than 10.6 (for example, 10.5.x or earlier)
The device is affected if it runs any version below the fixed release for its platform: iOS/iPadOS/tvOS/watchOS below 17.6, visionOS below 1.3, or macOS Sonoma between 14.0 and 14.5.x.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped1.310.614.6
Apply the available security updates (iOS 17.6, iPadOS 17.6, macOS Sonoma 14.6, tvOS 17.6, visionOS 1.3, watchOS 10.6) to all affected Apple devices within the organization.
iOS 17.6, iPadOS 17.6, macOS Sonoma 14.6, tvOS 17.6, visionOS 1.3, watchOS 10.6
- For iOS/iPadOS devices: Back up the device, then go to Settings > General > Software Update and install iOS 17.6 or iPadOS 17.6
- For macOS devices: Back up the Mac, then go to System Settings > General > Software Update and install macOS Sonoma 14.6
- For Apple TV: Go to Settings > General > Software Update and install tvOS 17.6
- For Apple Vision Pro: Go to Settings > General > Software Update and install visionOS 1.3
- For Apple Watch: Ensure the watch is charging and connected to iPhone, then open the Watch app on iPhone, go to General > Software Update, and install watchOS 10.6
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-40777 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sources- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- seclists.org
- seclists.org
- seclists.org
- seclists.org
- seclists.org
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- nvd.nist.gov
Practitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-40777 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data